<template>
  <div>
    <div class='search'>
      <input
        class='input-search'
        placeholder="pls input Shinese or English"
        v-model= 'keyword'
      >
    </div>
    <div class='search-content' ref='search' v-show='keyword'>
      <ul>
        <li
          class='search-item border-bottom'
          v-for='item of list'
          :key= 'item.id'
          @click='handCityClick(item.name)'
        >{{item.name}}>
        </li>
        <li class= 'search-item border-bottom' v-show= 'hasNoData'>没有找到匹配项</li>
      </ul>
    </div>
  </div>
</template>

<script>
import Bscroll from 'better-scroll'
export default {
  name: 'CitySearch',
  props: {
    cities: Object
  },
  data () {
    return {
      keyword: '',
      list: [],
      timer: null
    }
  },
  computed: {
    hasNoData () {
      return !this.list.length
    }
  },
  methods: {
    handCityClick (city) {
      this.$store.dispatch('changeCity', city)
      this.$router.push('./')
    }
  },
  mounted () {
    this.scroll = new Bscroll(this.$refs.search)
  },
  watch: {
    keyword () {
      if (this.timer) {
        clearTimeout(this.timer)
      }
      if (!this.keyword) {
        this.list = []
        return
      }
      this.timer = setTimeout(() => {
        const result = []
        for (var i in this.cities) {
          this.cities[i].forEach((value) => {
            if (value.spell.indexOf(this.keyword) > -1 ||
              value.name.indexOf(this.keyword) > -1) {
              result.push(value)
            }
          })
        }
        this.list = result
      }, 100)
    }
  }
}
</script>

<style lang='stylus' scoped>
  @import '~styles/varibles.styl'
  .search
    margin-top: -.1rem
    line-height: .72rem
    background: $bgColor
    padding: .1rem;
    .input-search
      width: 100%
      text-align: center
      color: red
      border-radius: .1rem
      height: .64rem
      display: block
      margin: 0 auto
      padding: 0.1rem
      box-sizing: border-box
  .search-content
    z-index: 1
    position: absolute
    top: 1.6rem
    left: 0
    right: 0
    bottom: 0
    overflow: hidden
    background: #eee
    .search-item
      line-height:.46rem
      padding: .2rem
      background: #fff
</style>
